I am not a current pilot but ...... there is a big difference between flying for fun (when you get airborne on a sunny day and go where and when you want) and flying for a job when you have to fly when somebody else wants you to fly, be it at unsociable hours, in rotten and perhaps unexpected bad weather, perhaps in god forsaken places where expensive helicopters are only used because there is no other way, or perhaps with customers who treat you like dirt.
Being a professional helicopter pilot is not glamorous. There are summer days when it is a joy to fly and your passengers are pleasant and appreciative of your skills and care but you will find that those days are far less frequent than those when it is just another job and you are pleased when the workday ends. And remember your career could end abruptly if you fail a regular medical check.
In your position I would stay in the family business, fly for fun.